A. No adapter is required, and the valve can be directly switched. This bicycle pump is compatible with the universal Presta valve and can be used for road bikes, mountain bikes, children's bikes, etc. B. The workmanship is delicate and the style is perfect. C. This manual pump is made of metal, and its components are durable and precise. It is equipped with multiple anti - leakage rubber rings and is ergonomically designed for labor - saving inflation. D. These valves are suitable for the tires of bicycles, electric bicycles and motorcycles, and also enable the pump to have more functions: it can inflate most balls, balloons, swimming rings, kayaks, etc. Users may need a multi - functional bicycle pump. E. This mini bicycle inflator can inflate bicycles, as well as balls such as basketballs, footballs and volleyballs, swimming rings and inflatable swimming pools. It is also suitable for electric bicycles, baby carriages and wheelchairs. F. Color: Black G. Material: Metal + Plastic H. Size: 46.5 cm I. Package contents: - 1 bicycle pump - 1 set of accessories J. Only the above package contents are included, and other products are not included. K. Note: Light reflection and different displays may cause the color of the items in the picture to vary slightly from the actual product. The allowable error for size measurement is +/- 1 - 3 cm.